A solar water heater insulation water tank

Abstract

The utility model discloses a solar water heater heat preservation water tank, including support frame, outer water tank and inner water tank. Outer water tank fixed mounting is in support frame, and the top is equipped with the access hole with top cover, and the inside fixed mounting has inner water tank through inner support, and the surface of inner water tank is equipped with heat insulating layer. Support frame still is equipped with electric pump, and electric pump is connected with outer water tank bottom through first water pipe, and is connected with inner water tank top through second water pipe. Outer water tank top is equipped with inlet pipe, and inner water tank bottom is equipped with outlet pipe, and outer water tank still is connected with temperature sensor. The device is through the heat collection of outer water tank, and temperature sensor detects water temperature to standard after starting electric pump, and the hot water is pumped into inner water tank storage, realizes cold and hot water layering, avoids mixing, and replenishes outer water tank cold water in time, and the solar energy utilization efficiency and heating performance are improved obviously.

Description

Technical Field

[0001] This utility model belongs to the field of solar water heater technology, specifically relating to a solar water heater insulated water tank. Background Technology

[0002] Solar water heaters heat water in a tank by converting solar energy into thermal energy. Because hot water is less dense than cold water, the heated water accumulates at the top of the tank, while the cold water remains at the bottom. Currently, most solar water heaters have the outlet located on one side of the tank. When a large amount of water is used, causing the water level to drop, the hot and cold water mix and exchange heat as it flows towards the outlet, resulting in heat loss and reducing the system's efficiency in utilizing hot water.

[0003] Chinese utility model patent CN219934313U discloses a solar water heater insulated water tank, comprising an inner tank, an outer shell, an insulation layer, an outlet pipe, and an inlet pipe. The inner tank's cavity is divided into several chambers by fixedly installed heat-insulating partitions; a connecting pipe is installed in the middle of each heat-insulating partition; a solenoid valve is installed on each connecting pipe; a flexible hose is connected to the end of each connecting pipe opposite to the outlet pipe; a float ball is installed at one end of the flexible hose. The advantages of this utility model are: simple structure, effective improvement of hot water utilization, and ability to meet various needs. However, it requires connection to an external solar water heater, making installation very cumbersome. Utility Model Content

[0004] The purpose of this utility model is to provide a solar water heater insulated water tank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a solar water heater insulated water tank, including a support frame, on which an outer water tank is fixedly installed. The outer water tank has an inspection port, on which a top cover is fixedly installed. An inner water tank is fixedly installed inside the outer water tank via an inner bracket. A heat insulation layer is fixedly installed on the surface of the inner water tank. An assembly plate is fixedly installed on the support frame. An electric pump is fixedly installed on the assembly plate. The suction port of the electric pump is connected to the bottom of the outer water tank via a first water pipe. The electric pump is connected to the top of the inner water tank via a second water pipe. An inlet pipe is fixedly connected to the top of the outer water tank. An outlet pipe is fixedly connected to the bottom of the inner water tank. A temperature sensor is fixedly connected to the outer water tank via a wire.

[0006] Preferably, a first water level threshold sensing element is fixedly installed inside the outer water tank, and a second water level threshold sensing element is fixedly installed inside the outer water tank.

[0007] Preferably, the assembly plate is fixedly mounted with a controller.

[0008] Preferably, the inner water tank is fixedly installed with a pressure relief valve via a riser.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention injects cold water into the outer water tank via an inlet pipe. The outer water tank absorbs solar radiation heat and heats the cold water inside. When the temperature sensor detects that the water temperature has reached a set value, the electric pump is activated, pumping the heated hot water from the outer water tank into the inner water tank through a second water pipe. The hot water in the inner water tank is then supplied for use via an outlet pipe. After the hot water in the outer water tank is completely pumped out, cold water is replenished through the inlet pipe. This design effectively prevents the mixing of hot and cold water, and by promptly replacing the cold water in the outer water tank, it significantly improves the heating efficiency of solar energy. Attached Figure Description

[0011] Figure 1 This is a structural view of the present invention.

[0012] Figure 2 This is the first cross-sectional structural view of this utility model.

[0013] Figure 3 This is the second cross-sectional structural view of this utility model.

[0014] The diagram is labeled as follows: support frame 1, outer water tank 2, inspection port 3, top cover 4, inner bracket 5, inner water tank 6, insulation layer 7, assembly plate 8, electric pump 9, first water pipe 10, second water pipe 11, inlet pipe 12, outlet pipe 13, temperature sensor 14, first water level threshold sensing element 15, second water level threshold sensing element 16, controller 17, riser 18, pressure relief valve 19. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1:

[0017] This utility model provides a solar water heater insulated water tank, including a support frame 1, on which an outer water tank 2 is fixedly installed. The outer water tank 2 has an inspection port 3, on which a top cover 4 is fixedly installed. An inner water tank 6 is fixedly installed inside the outer water tank 2 via an inner bracket 5. A heat insulation layer 7 is fixedly installed on the surface of the inner water tank 6. An assembly plate 8 is fixedly installed on the support frame 1, and an electric pump 9 is fixedly installed on the assembly plate 8. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 via a first water pipe 10, and the electric pump 9 is connected to the top of the inner water tank 6 via a second water pipe 11. An inlet pipe 12 is fixedly connected to the top of the outer water tank 2, and an outlet pipe 13 is fixedly connected to the bottom of the inner water tank 6. A temperature sensor 14 is fixedly connected to the outer water tank 2 via a wire. A first water level threshold sensing element 15 and a second water level threshold sensing element 16 are fixedly installed inside the outer water tank 2. A controller 17 is fixedly installed on the assembly plate 8. The inner water tank 6 is fixedly installed with a pressure relief valve 19 via a riser pipe 18.

[0018] Through the above technical solution, this utility model injects cold water into the outer water tank 2 through the inlet pipe 12. The outer water tank 2 absorbs solar radiation heat and heats the internal cold water. When the temperature sensor 14 detects that the water temperature has reached the set value, the electric pump 9 is activated to pump the heated hot water in the outer water tank 2 into the inner water tank 6 through the second water pipe 11. The hot water in the inner water tank 6 is supplied for use through the outlet pipe 13. After the hot water in the outer water tank 2 is exhausted, cold water is replenished through the inlet pipe 12. This design effectively avoids the mixing of hot and cold water, and significantly improves the heating efficiency of solar energy by timely replacing the cold water in the outer water tank 2.

[0019] Example 2:

[0020] In this embodiment, the support frame 1 is fixedly installed with an outer water tank 2. The outer water tank 2 is provided with an inspection port 3. The inspection port 3 is fixedly installed with a top cover 4. The inner water tank 6 is fixedly installed inside the outer water tank 2 through an inner bracket 5. The surface of the inner water tank 6 is fixedly installed with a heat insulation layer 7. The support frame 1 is fixedly installed with an assembly plate 8. The assembly plate 8 is fixedly installed with an electric pump 9. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 through a first water pipe 10. The electric pump 9 is connected to the top of the inner water tank 6 through a second water pipe 11. The top of the outer water tank 2 is fixedly connected with an inlet pipe 12. The bottom of the inner water tank 6 is fixedly connected with an outlet pipe 13. The outer water tank 2 is fixedly connected with a temperature sensor 14 through a wire.

[0021] In this embodiment, the support frame 1 is made of metal, possessing sufficient strength and stability to support the entire structure of the insulated water tank. The support frame 1 is bolted to the ground or mounting platform to ensure the water tank remains stable during use. The outer water tank 2 is mounted on the support frame 1. The material of the outer water tank 2 has good weather resistance and thermal conductivity, effectively absorbing solar radiation heat. The top of the outer water tank 2 is equipped with an inspection port 3 for routine maintenance and cleaning. A top cover 4 is installed on the inspection port 3, and the top cover 4 fits tightly with the inspection port 3 through a sealing ring to prevent heat loss and the entry of external contaminants.

[0022] An inner water tank 6 is fixedly installed inside the outer water tank 2 via an inner bracket 5. The inner bracket 5 is made of heat-insulating material to reduce heat conduction between the inner water tank 6 and the outer water tank 2. A heat insulation layer 7 is fixedly installed on the surface of the inner water tank 6. The heat insulation layer 7 is made of high-efficiency heat-insulating material, which effectively reduces heat loss from the inner water tank 6 and maintains a stable water temperature. The capacity of the inner water tank 6 is designed according to actual needs to store enough hot water for daily use.

[0023] An assembly plate 8, made of metal, is fixedly mounted on the support frame 1, providing sufficient load-bearing capacity. An electric pump 9 is fixedly mounted on the assembly plate 8, connected to it by bolts to ensure stability during operation. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 via a first water pipe 10, made of high-temperature resistant material to withstand the temperature of the hot water in the outer water tank 2. The electric pump 9 is connected to the top of the inner water tank 6 via a second water pipe 11, also made of high-temperature resistant material, ensuring smooth pumping of hot water into the inner water tank 6.

[0024] An inlet pipe 12 is fixedly connected to the top of the outer water tank 2. The inlet pipe 12 is used to inject cold water into the outer water tank. One end of the inlet pipe 12 is connected to the outer water tank 2, and the other end is connected to an external water source. The injection of cold water is controlled by a valve. An outlet pipe 13 is fixedly connected to the bottom of the inner water tank 6. The outlet pipe 13 is used to supply hot water from the inner water tank 6 to the user. A valve is installed on the outlet pipe 13 to allow the user to control the flow of hot water.

[0025] A temperature sensor 14 is fixedly connected to the external water tank 2 via wires. The temperature sensor 14 is installed inside the external water tank 2 and is used to monitor the water temperature in the external water tank 2 in real time. The temperature sensor 14 is connected to the control system via wires. When the detected water temperature reaches the set value, the control system automatically starts the electric pump 9 to pump hot water from the external water tank 2 into the internal water tank 6. The installation position of the temperature sensor 14 is optimized to accurately reflect changes in the water temperature in the external water tank 2, ensuring efficient system operation.

[0026] The working principle of this embodiment is as follows: Cold water is injected into the outer water tank 2 through the inlet pipe 12. The outer water tank 2 absorbs solar radiation heat and heats the internal cold water. When the temperature sensor 14 detects that the water temperature has reached the set value, the electric pump 9 is started, pumping the heated hot water in the outer water tank 2 into the inner water tank 6 through the second water pipe 11. The hot water in the inner water tank 6 is supplied for use through the outlet pipe 13. After the hot water in the outer water tank 2 is pumped out, cold water is replenished through the inlet pipe 12. This design, through the coordinated work of the electric pump 9 and the temperature sensor 14, achieves effective separation of hot and cold water, avoiding heat loss caused by mixing. At the same time, by timely replacing the cold water in the outer water tank 2, the heating efficiency of solar energy is significantly improved. The entire system has a simple structure, is easy to install, does not rely on external equipment, and is suitable for various solar water heater application scenarios.

[0027] Example 3:

[0028] In this embodiment, an outer water tank 2 is fixedly installed on the support frame 1. The outer water tank 2 has an inspection port 3, and a top cover 4 is fixedly installed on the inspection port 3. An inner water tank 6 is fixedly installed inside the outer water tank 2 via an inner bracket 5. A heat insulation layer 7 is fixedly installed on the surface of the inner water tank 6. An assembly plate 8 is fixedly installed on the support frame 1, and an electric pump 9 is fixedly installed on the assembly plate 8. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 via a first water pipe 10, and the electric pump 9 is connected to the top of the inner water tank 6 via a second water pipe 11. An inlet pipe 12 is fixedly connected to the top of the outer water tank 2, and an outlet pipe 13 is fixedly connected to the bottom of the inner water tank 6. A temperature sensor 14 is fixedly connected to the outer water tank 2 via a wire. A first water level threshold sensing element 15 is fixedly installed inside the outer water tank 2. When the outer water tank 2 is full of water, it sends a stop signal. A second water level threshold sensing element 16 is fixedly installed inside the outer water tank 2. When the inner water tank 6 is full of water, it sends a stop signal.

[0029] The first water level threshold sensing element 15 and the second water level threshold sensing element 16 are respectively installed at predetermined heights in the outer water tank 2 and the inner water tank 6 to monitor changes in the water level within the tanks. When cold water is injected into the outer water tank 2 through the inlet pipe 12, the water level gradually rises. When the first water level threshold sensing element 15 detects that the water level has reached the upper limit of the capacity of the outer water tank 2, it automatically sends a stop signal to control the water inlet system to close, preventing the outer water tank 2 from overflowing. The outer water tank 2 heats the internal cold water under solar radiation. The temperature sensor 14 monitors the water temperature in real time. When the water temperature reaches the set value, the electric pump 9 is started. The electric pump 9 draws heated hot water from the bottom of the outer water tank 2 through the first water pipe 10 and pumps it into the top of the inner water tank 6 through the second water pipe 11.

[0030] During the filling process of the inner water tank 6, the second water level threshold sensing element 16 monitors the water level of the inner water tank 6. When the water level reaches the upper limit of the capacity of the inner water tank 6, a stop signal is automatically issued to control the electric pump 9 to stop working, thus preventing the inner water tank 6 from becoming overfilled. The hot water in the inner water tank 6 is supplied for use through the bottom outlet pipe 13. Since the hot water is stored in the inner water tank 6 and flows out through the bottom, the possibility of mixing of hot and cold water is effectively reduced, improving heat utilization efficiency. After the hot water in the outer water tank 2 is pumped out, the system replenishes cold water through the inlet pipe 12, repeating the above process to achieve a continuous and efficient supply of hot water. This embodiment, through the synergistic effect of the water level sensing element, ensures precise control of the water tank filling and pumping process, improving the stability and energy efficiency of the system operation.

[0031] Example 4:

[0032] In this embodiment, an outer water tank 2 is fixedly installed on the support frame 1. The outer water tank 2 has an inspection port 3, and a top cover 4 is fixedly installed on the inspection port 3. An inner water tank 6 is fixedly installed inside the outer water tank 2 via an inner bracket 5. A heat insulation layer 7 is fixedly installed on the surface of the inner water tank 6. An assembly plate 8 is fixedly installed on the support frame 1, and an electric pump 9 is fixedly installed on the assembly plate 8. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 via a first water pipe 10, and the electric pump 9 is connected to the top of the inner water tank 6 via a second water pipe 11. An inlet pipe 12 is fixedly connected to the top of the outer water tank 2, and an outlet pipe 13 is fixedly connected to the bottom of the inner water tank 6. A temperature sensor 14 is fixedly connected to the outer water tank 2 via a wire. A controller 17 is fixedly installed on the assembly plate 8. The controller 17 is connected to the temperature sensor 14 and a second water level threshold sensing element 16, and is used to control the start and stop of the motor.

[0033] The controller 17 is connected to the temperature sensor 14 via a wire. The temperature sensor 14 is installed inside the outer water tank 2 to monitor the water temperature in the outer water tank 2 in real time. When the temperature sensor 14 detects that the water temperature has reached the preset heating completion temperature, the controller 17 receives the temperature signal and starts the electric pump 9. The electric pump 9 draws heated hot water from the bottom of the outer water tank 2 through the first water pipe 10 and pumps the hot water into the top of the inner water tank 6 through the second water pipe 11. The hot water in the inner water tank 6 is supplied to the user through the outlet pipe 13 at the bottom, avoiding the mixing of hot and cold water in the inner water tank 6 and reducing heat loss.

[0034] The controller 17 is also connected to a second water level threshold sensor 16 via a wire. The second water level threshold sensor 16 is installed inside the outer water tank 2 and is used to detect the water level in the outer water tank 2. When the water level drops to the preset minimum water level threshold, the second water level threshold sensor 16 sends a signal to the controller 17, and the controller 17 immediately stops the operation of the electric pump 9 to prevent the electric pump 9 from running dry and being damaged. At the same time, the controller 17 controls the cold water to be replenished into the outer water tank 2 through the water inlet pipe 12. After the cold water in the outer water tank 2 is heated by solar energy, the temperature sensor 14 detects that the water temperature has reached the set value again, and the controller 17 restarts the electric pump 9 to pump hot water into the inner water tank 6 to achieve circulation operation.

[0035] In this embodiment, the controller 17 is configured for automated operation, requiring no manual intervention and improving the system's intelligence and operational efficiency. Through the coordinated operation of the temperature sensor 14 and the second water level threshold sensing element 16, the controller 17 can precisely control the start and stop of the electric pump 9, ensuring that hot water in the outer water tank 2 is promptly pumped into the inner water tank 6, while preventing the electric pump 9 from operating at low water levels, thus extending the equipment's lifespan. Furthermore, the controller 17 is installed on the mounting plate 8, facilitating inspection and maintenance, and improving the system's reliability and practicality.

[0036] Throughout the entire operation, the controller 17 dynamically adjusts the operating status of the electric pump 9 based on temperature and water level signals, optimizing the hot water extraction and storage process. Cold water in the outer water tank 2, after being heated by solar energy, is rapidly transferred to the inner water tank 6, reducing heat loss during transmission. The insulation layer 7 of the inner water tank 6 further ensures the temperature stability of the hot water, improving hot water utilization efficiency. This design effectively solves the energy waste problem caused by the mixing of hot and cold water in traditional solar water heaters, enhancing the overall performance of the system.

[0037] Example 5:

[0038] In this embodiment, an outer water tank 2 is fixedly installed on the support frame 1. The outer water tank 2 has an inspection port 3, and a top cover 4 is fixedly installed on the inspection port 3. An inner water tank 6 is fixedly installed inside the outer water tank 2 via an inner bracket 5. A heat insulation layer 7 is fixedly installed on the surface of the inner water tank 6. An assembly plate 8 is fixedly installed on the support frame 1, and an electric pump 9 is fixedly installed on the assembly plate 8. The suction port of the electric pump 9 is connected to the bottom of the outer water tank 2 via a first water pipe 10, and the electric pump 9 is connected to the top of the inner water tank 6 via a second water pipe 11. An inlet pipe 12 is fixedly connected to the top of the outer water tank 2, and an outlet pipe 13 is fixedly connected to the bottom of the inner water tank 6. A temperature sensor 14 is fixedly connected to the outer water tank 2 via a wire. A pressure relief valve 19 is fixedly installed on the inner water tank 6 via a riser pipe 18. When water is added to the inner water tank 6, the internal air pressure is released, ensuring the airtightness of the inner water tank 6 and ensuring its heat preservation performance.

[0039] In this embodiment, the pressure relief valve 19 is fixedly installed at the top of the inner water tank 6 via a riser 18. The riser 18 is a vertically arranged tubular structure, with one end communicating with the internal space of the inner water tank 6 and the other end fixedly connected to the pressure relief valve 19. The pressure relief valve 19 adopts a mechanical pressure release device, which is equipped with a spring and a sealing gasket inside. When the air pressure inside the inner water tank 6 exceeds a set threshold, the spring is compressed and deformed, pushing the sealing gasket to open, allowing excess gas to be discharged through the pressure relief valve 19. When the air pressure returns to normal, the spring rebounds, and the sealing gasket closes again, ensuring the sealing state of the inner water tank 6. This design effectively avoids structural deformation or sealing failure caused by excessive internal pressure in the inner water tank 6, while maintaining the heat preservation performance of the inner water tank 6.

[0040] In actual operation, when the electric pump 9 starts and pumps hot water from the outer water tank 2 into the inner water tank 6 through the second water pipe 11, the water level inside the inner water tank 6 rises, and the existing air is compressed, causing the air pressure to increase. At this time, the pressure relief valve 19 automatically opens to release the compressed air, reduce the internal pressure, ensure a smooth water filling process, and avoid affecting the working efficiency of the electric pump 9 or causing water flow obstruction due to air pressure resistance. After the water filling is completed, the pressure relief valve 19 quickly closes to prevent external air from entering the inner water tank 6, reduce heat exchange loss, and thus maintain a stable temperature of the hot water in the inner water tank 6.

[0041] Furthermore, the pressure relief valve 19 is installed at a position connected to the top of the inner water tank 6 via the riser 18. This high-level arrangement facilitates gas accumulation and rapid release, while preventing water flow from directly impacting the internal structure of the pressure relief valve 19, thus extending its service life. The riser 18 is made of the same material as the inner water tank 6 to ensure a consistent coefficient of thermal expansion, preventing leaks or loosening at the connection due to temperature changes. The entire pressure relief process requires no manual intervention, achieving automated pressure management, which improves system safety and ensures the continuity and efficiency of hot water supply.

[0042] Through this embodiment, the insulated water tank of the solar water heater can effectively regulate the internal air pressure during the water filling process, maintain a sealed environment, reduce heat loss, and thus improve the overall energy utilization efficiency and user experience.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A solar water heater insulated water tank, comprising a support frame, an outer water tank fixedly mounted on the support frame, the outer water tank having an inspection port, and a top cover fixedly mounted on the inspection port, characterized in that... An inner water tank is fixedly installed inside the outer water tank via an inner bracket. A heat insulation layer is fixedly installed on the surface of the inner water tank. An assembly plate is fixedly installed on the support frame. An electric pump is fixedly installed on the assembly plate. The suction port of the electric pump is connected to the bottom of the outer water tank via a first water pipe. The electric pump is connected to the top of the inner water tank via a second water pipe. An inlet pipe is fixedly connected to the top of the outer water tank. An outlet pipe is fixedly connected to the bottom of the inner water tank. A temperature sensor is fixedly connected to the outer water tank via a wire.

2. The insulated water tank for a solar water heater according to claim 1, characterized in that, A first water level threshold sensing element is fixedly installed inside the outer water tank, and a second water level threshold sensing element is fixedly installed inside the outer water tank.

3. The insulated water tank for a solar water heater according to claim 1, characterized in that, The controller is fixedly mounted on the assembly plate.

4. The insulated water tank for a solar water heater according to claim 1, characterized in that, The inner water tank is fixedly installed with a pressure relief valve via a riser pipe.

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